1 /* Startup code for elf32-sparc
2 Copyright (C) 1997, 1998, 2002, 2004, 2007, 2009
3 Free Software Foundation, Inc.
4 This file is part of the GNU C Library.
5 Contributed by Richard Henderson <richard@gnu.ai.mit.edu>, 1997.
7 The GNU C Library is free software; you can redistribute it and/or
8 modify it under the terms of the GNU Lesser General Public
9 License as published by the Free Software Foundation; either
10 version 2.1 of the License, or (at your option) any later version.
12 In addition to the permissions in the GNU Lesser General Public
13 License, the Free Software Foundation gives you unlimited
14 permission to link the compiled version of this file with other
15 programs, and to distribute those programs without any restriction
16 coming from the use of this file. (The GNU Lesser General Public
17 License restrictions do apply in other respects; for example, they
18 cover modification of the file, and distribution when not linked
19 into another program.)
21 Note that people who make modified versions of this file are not
22 obligated to grant this special exception for their modified
23 versions; it is their choice whether to do so. The GNU Lesser
24 General Public License gives permission to release a modified
25 version without this exception; this exception also makes it
26 possible to release a modified version which carries forward this
29 The GNU C Library is distributed in the hope that it will be useful,
30 but WITHOUT ANY WARRANTY; without even the implied warranty of
31 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
32 Lesser General Public License for more details.
34 You should have received a copy of the GNU Lesser General Public
35 License along with the GNU C Library; if not, write to the Free
36 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
50 .type _start,#function
53 sethi %hi(_GLOBAL_OFFSET_TABLE_-4), %l7
55 add %l7, %lo(_GLOBAL_OFFSET_TABLE_+4), %l7
58 /* Terminate the stack frame, and reserve space for functions to
59 drop their arguments. */
63 /* Extract the arguments and environment as encoded on the stack. The
64 argument info starts after one register window (16 words) past the SP. */
68 /* Load the addresses of the user entry points. */
70 sethi %hi(__libc_csu_init), %o3
71 sethi %hi(__libc_csu_fini), %o4
72 or %o0, %lo(main), %o0
73 or %o3, %lo(__libc_csu_init), %o3
74 or %o4, %lo(__libc_csu_fini), %o4
81 /* When starting a binary via the dynamic linker, %g1 contains the
82 address of the shared library termination function, which will be
83 registered with atexit(). If we are statically linked, this will
87 /* Let libc do the rest of the initialization, and call main. */
88 call __libc_start_main
91 /* Die very horribly if exit returns. */
94 .size _start, .-_start
96 /* Define a symbol for the first piece of initialized data. */
101 weak_alias (__data_start, data_start)